Hot-air furnace



E, WEBSTER.

Hot 'Air Furnace.

Patented June 12, 1866'.

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ED\VARD WEBSTER, OF HARTFORD, CONNECTICUT.

HOT-AIR FURNACE.

$pecitication forming part of Letters Patent No. 55,564, dated June 12,1866.

To all whom it may concern:

Be it known that I, EDWARD WEBSTER, of the city and county of Hartford,and State of Connecticut, have invented certain new and usefulImprovements in Furnaces or Stoves; and I do hereby declare that Ibelieve the same to be fully described and represented in the followingspecification and drawings.

To enable others skilled in, the art to make and use my invention, Iwill proceed to describe the same by referring to the drawings, in whichthe same letters indicate like parts in each of the figures.

The nature of this invention will be understood from the specificationand drawings. The object desired to be attained thereby is to producethe greatest amount of heat, perfect ventilation, and free circulationof heated or cold air in rooms or apartmentsof a building.

In the accompanying drawings, Figure l is a front elevation, showing itsexternal appearance. Fig. 2 is a sectional side elevation. Fig. 3 is aplan view out through the partitions d and dampers g, just above theupper ends of the air-tubes i. Fig. 4 is a top view. Fig. 5 is a partialsection view, out just above the grate f. Fig. 6 is a plan representingthe rooms, halls, &c., to be heated.

at is the base or air-chamber ot' the stove or furnace. b is the insidecylinder. 0 is the outside cylinder. The space between these two wallsor cylinders is divided into four parts, more or less,from top tobottom, by partitions d. The lower ends of each of these cylinders restupon or form a part of the base a. The upper end of the inside andoutside cylinders, c b, are closed by the heads cf, so that the air mayhave a free upward passage through the inside of the tubes 2' andbetween the two cylinders 0 Z). The partitions d divide the space intofour, more or less, points, as may be desirable, between the inner andouter surface of the cylinders c b, and continue along over the topbetween the plates 0 f, and unite at the center of the-furnace, thusdividing the inside of the furnace into two distinct apartmentsone forsmoke, gas, 850., and one for circulation, air, heat, &e. The dampers gare arranged in said partitions d between the plates 0 f, so that whenthey are closed the air ascendin g will be divided into four or morecurrents,

as desirable, and conducted to apartments in the usual way.

It is an air-chamber in the base a, used when the air is introduced fromout-doors.

t are air-tubes, the lower ends of which pass through the plate j intoand made tight in the top plate of the airchamber 0, so that the.

the purpose of allowing exit-passage of smoke, 850., under its lowersurface. This plate j is perforated near its outer edge, through whichthe pipes i pass to the bottom plate of the furnace or top of theair-chamber h, and is arranged a short distance above said plate, moreor less, as desirable, thus causing the heat to diffuse itself equallyover the whole surface of the cylinder and tubes before it escapes fromthe stove or furnace, which can only be done by passing between the edgeof the plate j and the side of the cylinder 1) into the funnel t, thencethrough the exit-pipe in the usual way.

70 is a fire-pot arranged in the center of the stove or furnace and madein the usual way.

l is the grate, also made and secured in the common way.

m is a door which opens into the fire-pot through the inner cylinder,1).

m is a door in the outer cylinder, 0, directly in front of the door mbut in the manufacture of this stove or furnace I propose to usea framewhich will close up the passage around the door-openings m m between thetwo cylinders leading to the fire-pot, and thus use but one door.

a is a door which opens to the ash-box directly under the grate.

0 represents a box or pipe through which the air is introduced into thechamber h of the furnace.

p are openings through which the hot air is communicated to thedifferent apartments.

1) is a pipe designed to conduetthe air from the apartments back intothe chamber h, and is especially designed for ventilating apartments bythe displacement of impure air with fresh Warm air,

8 are dampers or valves arranged in the pipes at different points forthe purpose of directing the course of the smoke, gas, or air, in theusual way, either when heated or cold.

r are air-passages formed in the bottom plate, j, of the stove orfurnace near its outer edge, to allow air to circulate or ascend betweenthe inner and outer cylinders, of.

tis the outlet or funnel through which the gas and smoke passes from thefurnace, and is formed in the center of the cylinder through the topplate of the chamber it.

Now, it will be seen that the air enters the chamber it through the pipe0 and passes up through the tubes t'and passages r to the upper part ofthe furnace, and thence, through the pipesp, into the apartments, asdesired, by sim ply turning or openingthe requisite valvetherefor. Thefire is madein the fire-pot in the usual way. The heat therefromdifl'uses itself around the air-tubes and the surface of thecy1inder,its exit-draft being confined to a downward course around theedge of the plate j into the central exit-pipe, t, in the center of thefurnace, as before described. The heat will be exhausted,or nearly so,upon the air-tubes and cylinder surface before it leaves the stove orfurnace.

a is a case formed in the top of the furnace, provided with a flange, o,and openings 1;, to. allow the vapor to pass off and mingle with air inits passage to the apartments.

0 is the evaporating-dish placed inside of the case a, and rests uponthe flange 'v.

o is a cover which prevents the outward escape of vapor from theevaporating-dish o.

w is a sliding air-tube which enters the bottom of the case a throughthe side of the furnace and is provided with a perforation in its side,near its outer end, through which air may be admitted into said case, toincrease or check evaporation, by moving said pipe out or in.

Now, it will be seen that by making the fire and admitting the air inthe furnace in the usual way, the heat therefrom, in consequence of theplatej and the arrangement of the exittlange 25, will be more widelydiffused and eX- hausted upon the internal surface of the cylinder andthe external surface of the air-pipes.

I have thus endea\ ored to show the nature, construction, and advantageof this improvement, so as to enable others skilled to make and use thesame.

What I claim, therefore, and desire to secure by Letters Patent, is-

1. Theeinploymentoi' the platej, in combination with the arrangement ofthe exit flange or pipe 25, substantially as and for the purposedescribed.

2. The case a, constructed as described, in combination with the dish c,tube w, and cover 27', substantially as and for the purpose described.

EDWARD \VEBSTER. [L. s.|

Witnesses:

CHAS. ALLEN, JEREMY W. Brass.

